public final class ObjectUtilities extends Object
Modifier and Type | Field and Description |
---|---|
static String |
CLASS_CONTEXT
A constant for using the ClassContext as source for the classloader.
|
static String |
THREAD_CONTEXT
A constant for using the TheadContext as source for the classloader.
|
Modifier and Type | Method and Description |
---|---|
static Object |
clone(Object object)
Returns a clone of the specified object, if it can be cloned, otherwise
throws a CloneNotSupportedException.
|
static Collection |
deepClone(Collection collection)
Returns a new collection containing clones of all the items in the
specified collection.
|
static boolean |
equal(Object o1,
Object o2)
Returns
true if the two objects are equal OR both
null . |
static ClassLoader |
getClassLoader()
Returns the custom classloader or null, if no custom classloader is defined.
|
static ClassLoader |
getClassLoader(Class c)
Returns the classloader, which was responsible for loading the given
class.
|
static String |
getClassLoaderSource()
Returns the internal configuration entry, whether the classloader of
the thread context or the context classloader should be used.
|
static URL |
getResource(String name,
Class c)
Returns the resource specified by the absolute name.
|
static InputStream |
getResourceAsStream(String name,
Class context)
Returns the inputstream for the resource specified by the
absolute name.
|
static URL |
getResourceRelative(String name,
Class c)
Returns the resource specified by the relative name.
|
static InputStream |
getResourceRelativeAsStream(String name,
Class context)
Returns the inputstream for the resource specified by the
relative name.
|
static int |
hashCode(Object object)
Returns a hash code for an object, or zero if the object is
null . |
static boolean |
isJDK14()
Returns
true if this is version 1.4 or later of the
Java runtime. |
static Object |
loadAndInstantiate(String className,
Class source)
Tries to create a new instance of the given class.
|
static Object |
loadAndInstantiate(String className,
Class source,
Class type)
Tries to create a new instance of the given class.
|
static void |
setClassLoader(ClassLoader classLoader)
Redefines the custom classloader.
|
static void |
setClassLoaderSource(String classLoaderSource)
Defines the internal configuration entry, whether the classloader of
the thread context or the context classloader should be used.
|
public static final String THREAD_CONTEXT
public static final String CLASS_CONTEXT
public static String getClassLoaderSource()
public static void setClassLoaderSource(String classLoaderSource)
This setting can only be defined using the API, there is no safe way to put this into an external configuration file.
classLoaderSource
- the classloader source,
either THREAD_CONTEXT or CLASS_CONTEXT.public static boolean equal(Object o1, Object o2)
true
if the two objects are equal OR both
null
.o1
- object 1 (null
permitted).o2
- object 2 (null
permitted).true
or false
.public static int hashCode(Object object)
null
.object
- the object (null
permitted).null
).public static Object clone(Object object) throws CloneNotSupportedException
object
- the object to clone (null
not permitted).CloneNotSupportedException
- if the object cannot be cloned.public static Collection deepClone(Collection collection) throws CloneNotSupportedException
collection
- the collection (null
not permitted).CloneNotSupportedException
- if any of the items in the collection
cannot be cloned.public static void setClassLoader(ClassLoader classLoader)
classLoader
- the new classloader or null to use the default.public static ClassLoader getClassLoader()
public static ClassLoader getClassLoader(Class c)
c
- the classloader, either an application class loader or the
boot loader.SecurityException
- if the SecurityManager does not allow to grab
the context classloader.public static URL getResource(String name, Class c)
name
- the name of the resourcec
- the source classpublic static URL getResourceRelative(String name, Class c)
name
- the name of the resource relative to the given classc
- the source classpublic static InputStream getResourceAsStream(String name, Class context)
name
- the name of the resourcecontext
- the source classpublic static InputStream getResourceRelativeAsStream(String name, Class context)
name
- the name of the resource relative to the given classcontext
- the source classpublic static Object loadAndInstantiate(String className, Class source)
className
- the class name as String, never null.source
- the source class, from where to get the classloader.public static Object loadAndInstantiate(String className, Class source, Class type)
className
- the class name as String, never null.source
- the source class, from where to get the classloader.type
- the type.public static boolean isJDK14()
true
if this is version 1.4 or later of the
Java runtime.Copyright © 2001–2018 JFree.org. All rights reserved.